FR2575899A1 - DEVICE FOR CLEANING MILKING PLANTS - Google Patents

Abstract

A REMOTE CONTROLLED SHUT-OFF VALVE 3 IS PROVIDED BETWEEN THE SUCTION CHANNEL PORTION 2 AND THE SUCTION DUCT 4, WHICH IS CONNECTED BY A CONTROL CHANNEL 13 TO THE CONTROL UNIT 12. THE CONTROL UNIT 12 IS CONNECTED THROUGH CONTROL PIPES 11, 14 TO A LEVEL 10 DETECTOR IN AIR SEPARATOR 6 AND CIRCULATION PUMP 8. WHEN AIR SEPARATOR 6 IS EMPTY, THE LOWER CONTACT POINT OF LEVEL 10 DETECTOR IS ACTIVE AND, THROUGH THE CONTROL UNIT 12, THE STOP VALVE 3 IS OPEN AND THE CIRCULATION PUMP 8 IS STOPPED. AS SOON AS THE LEVEL OF THE LIQUID IN THE AIR SEPARATOR 6 HAS REACHED THE SECOND CONTACT POINT OF THE LEVEL 10 DETECTOR, THROUGH THE CONTROL UNIT 12 THE SHUT-OFF VALVE 3 IS CLOSED AND THE CIRCULATION PUMP 8 IS TURNED ON AND THE AIR SEPARATOR IS EMPTY AGAIN.

Description

Device for cleaning milking installations.

  The invention relates to a device for net-

  tyer milking facilities, including a sepa-

  air cooler, a rinse fluid reservoir, a suction line from the rinse fluid reservoir to the air separator through a milking station and a pressure line from the air separator to the flushing fluid; the air separator being connected in its upper zone

  to a depression line, and in its lower area

  lower than the pressure line in which is

  provided a circulation pump, and the portion of cana-

  Suction intake comprising a shut-off valve between the rinse fluid reservoir and the milking station. Such a device is known for example from DE-PS 29 13 928: to obtain a rinsing taking place

  at intervals it is planned, parallel to the canali-

  suction station immersed in the flushing fluid, an air suction nozzle whose opening can be opened and closed by a valve body floating on the flushing fluid. As long as the suction nozzle

  is closed, flushing fluid is drawn in through the cana-

  suction connection. When the level falls in the rinse aid tank, the suction nozzle

  air is released and air is drawn in through the duct

  tion until the rinse aid container is refilled through the pressure line and the air suction nozzle is closed again by the

  valve body. By introducing air into the cana-

  suction connection, the service vacuum is large

  part deleted in it, so that before the ope-

  next intake ration, depression must first be restored and thus should not occur

  no spontaneous start of the next flushing interval.

  Also, due to the air drawn in, the cleaning fluid

  The heated toy is undesirably cooled, which compromises the cleaning effect. In addition, the quantity of flushing fluid drawn in per flushing interval depends on the filling level and the dimensions of the flushing tank. If there are too many

  flushing fluid in the flushing fluid reservoir

  lashing, it may result in an overload of the air separator if the power of the circulation pump is too low to circulate the quantity quickly enough

  flushing fluid arriving in pulses.

  The object of the invention is to improve the effect

  cleaning the known device and prevent over-

charge of the air separator.

  This object is achieved by the fact that the shut-off valve is designed as a remote-controlled valve.

  and is connected by a control line to a device

  similar control, which is connected by other channels

  control stations with the circulation pump and a level detector provided in the air separator; the control unit is here designed so that

  the shut-off valve is closed when the circulating pump

  culation is on and open when the pump

traffic is stopped.

  Since large quantities of air are not introduced into the suction pipe, the service vacuum is maintained and the spontaneous start of a rinsing interval is obtained with a good cleaning effect. The cooling effect by air intake is avoided. We also obtain that it is not brought

  to the air separator that the amount of fluid

  required to reach the upper contact point of the level detector. The shut-off valve is then closed by means of the

  control and the circulation pump is started.

  As soon as the air separator has emptied to the lower contact point of the level detector, the circulation pump is stopped again and the valve

  is opened again, which triggers a new

  vel rinsing interval. This process is repeated in constant alternation until the end of the cleaning operation. The filling level of the air separator therefore goes as far as possible up to the upper contact point of the level detector regardless of the amount of fluid. in the tank, so that the air separator cannot be overloaded. To enhance the cleaning effect, it is

  proved advantageous to provide in the portion of canali-

  suction between the fluid reservoir

  flush and the shut-off valve a calibrated orifice of

  air mission. There is thus obtained a turbulent flow of the cleaning fluid which produces a better

  cleaning than a laminar flow.

  An example of the invention is shown in the drawing and will be explained below in more detail.

  with reference to the single figure representing diagrammatic

  the cleaning device of an installation

milking according to the invention.

  In the drawing, 1 designates the flushing fluid reservoir which is connected by the suction pipe portion 2, the stop valve 3, the pipe

  4 and the milking equipment 5 separate

  air tor 6. The upper zone of the air separator 6 is connected to a vacuum line 7, while

  that its lower zone is connected by the circulating pump

  lation 8 and the pressure line 9 to the rinse fluid reservoir 1. A level detector 10 is provided in the air separator 6 which communicates the filling state of the air separator to the control unit 12 by via the control line 11. A control line 13 goes from the control unit 12 to the stop valve 3 and a

  other control line 14 goes to the circulation pump

culation 8.

  At the start of cleaning, the separator 6 is emptied and the lower contact point of the level detector 10 is activated. In this state of the

  level 10, the shut-off valve 3 is opened by the

  intermediate of the control device 12 while the circulation pump 8 is still stopped. The rinsing fluid is drawn into the air separator 6 at large

  speed through the channel portion -

  suction 2, the shut-off valve 3, the canali-

  suction station 4 and milking equipment 5.

  The cleaning effect is further enhanced by the air introduced through the calibrated air intake orifice 15 and by the resulting turbulence. As soon as the level of the liquid in the air separator 6 has risen to the second point of contact of the level detector 10, the shut-off valve 3 is closed by means of the control unit and the pump. circulation 9 is switched on, and therefore the air separator 6 is again emptied up to the lower contact point

  of the level detector before a new cycle

  mence. Although air cannot enter the suction line when the shut-off valve is closed, it largely empties since the milking apparatus 5 which is connected to it

  has calibrated air intake ports.

-2575899

Claims (2)

  1. Device for cleaning a milking installation, comprising an air separator, a rinsing fluid reservoir, a suction line going from the rinsing fluid reservoir to the air separator via a milking station and a pressurized pipe going from the air separator to the rinsing fluid tank, the air separator being connected in its upper zone to a vacuum pipe,   and in its area below a pipe under pressure   sion in which a circulation pump is provided, and the portion of the suction line comprising a shut-off valve between the flushing fluid tank and the milking station, characterized in that the shut-off valve (3) is in the form of a remote-controlled valve and is connected by a control line (13) to a control device (12) which via other control lines (11,14) is connected to the circulation pump (8) and to a detector   level (10) provided in the air separator (6), the ap-   control unit (12) being connected so that the shut-off valve (3) is closed when the circulation pump (8) is on, and open when   the circulation pump (8) is stopped.   2. Device according to claim 1, characterized   in that there is provision in the pipe portion of as-   piration (2) between the flushing fluid tank (1) and the shut-off valve (3) a calibrated inlet orifice air (15).